No. 1408M VITA CAD/CAM Materials (Versión 006)

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The subgingival preparation border of the abutment exceeds 0.5 mm. What must be kept in mind?

A dry treatment site must be provided for the adhesive bonding technique. Rubber dam and/or retraction cords are suitable for keeping the site dry. Please make sure that any excess bonding material is completely removed from the sulcus.

Why is it necessary to sandblast the titanium abutment or zirconia abutment with high-grade corundum ....

.... (Al2O3) prior to bonding the crown? Is it also possible to sandblast with glass beads?

Defined surface enlargement and mechanical roughness are only achieved by sandblasting the abutment with Al2O3 prior to bonding the crown; in combination with the chemical compound (using a primer), reliable adhesive bonding of the crown to the abutment is achieved. Glass beads are not suitable for this purpose.

What needs to be done if you forget to apply the correct torque for the abutment screw ....

.... and what needs to be done in cases of screw loosening after bonding of the crown?

In such cases, simple trepanning of VITA ENAMIC crowns with a suitable milling or grinding tools can be carried out. Then prepare the access to the screw channel of the abutment. Tighten the prosthetic screw to the prescribed torque. Then follow the recommendations to seal the screw channel. Use phosphoric acid gel (30 sec) to clean the opening in the crown and then apply an adhesive/silane bonding agent. Light-curing restorative composites with high opacity are suitable to seal the opening. Please observe the corresponding instructions for use.

How is the screw channel of the abutment sealed prior to adhesive bonding of the VITA ENAMIC crown?

To seal the screw channel, first apply gutta-percha, Teflon tape, or a similar material into the screw channel; then apply a suitable bonding agent into the opening and seal it tightly using a light-curing restorative composite.